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العنوان
Characteristics of engineered cementitious composites containing supplementary cementitious materials /
المؤلف
Abd Elwahab, Sayed Salah Hussien.
هيئة الاعداد
باحث / س?د ص?ح حس?ن عبد الوھاب
مشرف / /محمد أسامة رمضان الحر?ري
مناقش / جمال السيد عبد العز?ز
مناقش / رامى زھران محمد رضوان
الموضوع
Cement composites analysis.
تاريخ النشر
2014.
عدد الصفحات
200 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الهندسة المدنية والإنشائية
تاريخ الإجازة
1/1/2014
مكان الإجازة
جامعة بنها - كلية الهندسة بشبرا - الهندسة الانشائية
الفهرس
Only 14 pages are availabe for public view

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Abstract

Engineered Cementitious Composite (ECC) is a class of ultra-ductile fiber reinforced cementitious composites developed for applications in the large material volume usage, cost sensitive construction industry. Since the introduction of this non-proprietary material a decade ago, ECC has undergone major evolution in both material development and the range of emerging applications. This research aims to study the possibility of manufacturing (ECC) containing Supplementary Cement Materials using local raw materials,and studying the mechanical and mass transport properties of such material and also investigation the possibility using it in Egypt. And study the possibility of production at low cost by using alternative materials for the basic material in the formation of (ECC). In this research, the author studied the effect of sand grade, w/c ratio, Poly Viny1 Alchol(PVA) fiber content, and fly ash content. The mechanical properties measured during the study are, namely, compressive strength, tensile strength, ductility, surface hardness, homogeneity, soroptivity, flow water mass transport and morphology. The results of the study showed that PVA can be used with Egyptian local raw material to produce ECC. Also, PVA notably improved the ductility of hardened mortar and the amount of improvement increased with increasing PVA content. On the other hand,Increasing PVA content reduced the flowability of mortar at all replacement levels of fly ash .from the compressive strength point of view, coarse sand showed better performance compared with these of ECC made with fine sand. The suggested optimum PVA content was found to be 1.0% in both fresh and hardened states of mortar.